david martin, cbs news, the pentagon. >> pelley: and that's the "cbs evening news" for tonight. for all of us at cbs news all around the world, good night. >>> shocking new details about the death of an infant girl allegedly at the hands of her 14-year-old brother, all revealed in the boy's first court appearance today in montgomery county. that's where scott broom was, as much of the focus is on the age of the accused killer. >> the suspect in this case, only an 8th grader. he remains charged as an adult tonight in the death of his seven month old sister, who officials revealed today was also covered in insect bites. jonathan aguiluz was a good student who night after night watched his younger siblings while hi